Provenance Passport
Mantis Sheltering from Heavy Rain 1/1
Andrew McDonald, 2021
Passport ID
07107154-09d7-459b-91d4-ffc6649a5b70
Entries
1
Chain Integrity
✓ Intact
Chain of Custody
Added to The Back Room
9/3/2026, 3:06:04 AM
hash: 679d13a77b3bb944f0117650e45592d5bf4e43ae355306a8a7fb9f671e1f584a
prev: — (genesis)
Each entry above stores a cryptographic hash of the entry before it, forming an append-only chain — altering any past entry would break every hash after it. This is not a public blockchain; it's maintained privately by The Back Room and verified the same way: by recomputing each hash and confirming it matches.
The Back Room · backroom.art
Certificate of Provenance
Mantis Sheltering from Heavy Rain 1/1
Andrew McDonald, 2021
Passport ID
07107154-09d7-459b…
Entries Recorded
1
Ledger Integrity
Verified Intact
Chain of Custody
| Added to The Back Room | 3 Sept 2026 |
This certificate attests that the chain of custody above is recorded on The Back Room's private, hash-chained provenance ledger and has been verified intact at time of printing.
Authorised Signatory
The Back Room
30 September 2026